Wrench



J. STROBEL Nov. 13, 1928.

WRENC H Filed July 11, 1927 Z z MVENTOR. BY fla /4.22%

ATTORNEY.

Patented Nov. 13, 1928,

UNITED fST-ATE'S ammomceg JOHN srnonnnosjnun mneamn, CALIFORNIA.

'1 wnmvom Application filed my. 11,

ent adjustment relativelyto'each other, en-

abling the offsetting, if desired, of the nut engaged to either side of a line passing lon-' gitudinally through the handle, should occasion arise which would necessitate the same; .1 to provide a construction wherein the mountinghead is of simple construction and tormation on each face enabling cheap manuracture,

and wherein the jaw members are duplicates ot simple constructionarranged in reverse pairs when assembled enabling cheap manufacture, the parts adaptable for quick as-. se nbling providing a structure which is adapted for manufacture atlittle cost; toprovide a screw adjustment for each jaw'mem ber constructed and arranged in such manner as to enable the wrench user to adjust the respective jaws by thumb and finger movement while the wrench is supported by the same hand. Another and important objects s to provide a handle aperture havingtaper'ing walls enabling the receptionof nutsot various sizes therein when-it is desired to usethe handle as a cap wrench, the handle aperture also enabling the insertion of a leverage im plement thereinto when axial rotation is desired to be applied to the jaw members when a nut axis is at alignment with the handle.

With the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings, and set forth in the claims hereto appended, it being understood that various changes in the form, proportion,

size and minor details of construction within the scope of the claims may be resorted to without departing from the spirit or sacrific ing any of the advantages of the invention.

To more fully'comprehend the invention, reference is directed to the accompanying drawings, wherein Fig. 1 is a View in elevation of the pre ferred embodiment of my invention with the jaws in closed position and meeting on a line extended centrally through the handle.

' Fig. 2 is an end view. 7

Fig. 3 is a view in perspective of one of the plates and its associated aw.

Fig, 4 is a view in elevation illustrating 1927. Serial No. 204,705

the jaws adjusted to a position offset to a line passing centrally through the handle.

,In the drawings disclosing the preferred embodiment of my invention, 1 indicates a wrench handleprovi'ded with an elongated aperture Q disposed longitudinally thereof and formed with converging side walls 3.

The aperture aiiordsan opening for receiving nuts or var ous when the'handle is used as a cap wrench. also when it is desired to apply leverage to thehan'dle when axial rotation is desired to be applied thereto with the nut anis'engaged between the aws in alignment with the handle. At its opposite end, the handle 1 mounts a head 4 illustrated as anilitegral part thereof.- Theend wallof the.

head is preferably centrally channeled fat 5 providing parallel spacedguide flanges 16 one pro ecting upwardly from each face of the head. At its base, the op 'osite faces of the headare correspondinglyc ianneled at 7, said channels eachcomprising in end elevation a horizontal leg 8 and a vertical leg 9 disposed at right angles thereto with the respective legs interconnecting throughout their length andwith the horizontal leg opening through the sideiiaceof the head. "The faces of the head between thechannels are formed with transversely. disposed arcuate depressions provided with teeth 10 for engagement by the jaw worms hereinafter described. The head 1 ,4 mounts a pair of jaw plates llfromthe outer ends of whichproject the jaws 12, the same being of a thickness when the plates are assembled to overliethe upper edge of the opposing plateas in the drawing and preferably of a width sothat their adjacent faces will contact with the outer edges ofthe respective plates lying flush withthe ends of the head.

The jaw plates are provided on their inner faces with upper and lower flanges 13 and 1 1, the upper for reception within the flange 5 and the lower for reception in channel 7. As illustrated, the jaw plates are adapted for assembly on the head 4: by :in-endwise movement one preferably. from each end of. the head with the flanges 13 and 14 in their respective Stop members 15 projectinwardly into each vertical leg 9 and the channels en channels.

gage stop lugs 16 and precludethe outward or separating movement of the jaw mounting plates 11. Each plate is provided with an aperture 17 in which is rotatably mounted on an axis 18 a cylindrical barrel 19 having a.

worm periphery 20', theharrel being suffi tive separating movement of said plate cient diameter to enable the worm periphery to pro ect in the worm teeth 10 and to extend beyond the outer face of the jaw plates to facilitate their manipulation.

As illustrated and described, the jaw plates carrying the respective aws are independently adjustable relatively to each other and" to the'j aw plate mounting head enabling the setting or" the jaw faces within their limits of ad ustment in any desired position relatively to the head to the nut desired. Thus the aw faces may be adjusted to a position wherein both are offset to the same side ofllne passing centrally through the, handle 1, its

structure adapting the wrench to uses where otlsct jaw and handlerelation is necessary.

I claim j I i v 1. A wrench comprising a handle provided with ahead formed on its end and inits opposite faces with parallel transversely disposed channels open at their opposite ends and further provided on opposite faces with a thread ed worm receiving depression; a p; r otduplicate jaw plates formed on one face-"with parallel transversely disposed flanges and adapted for mounting on the opposite faces of the head from opposite ends with the flanges slid- ,ably IGCBIEVGCl within said channels, each of said plates mounting an adj Listing worm proecting .therethrough' andone engaging with H the thread of one of said worm receiving depressions stop means for precluding the relas on the head and awproject ng beyond the end of each'plate and extending laterally from oneside of the upper edge ofitsplate to overlie the upper edgeof the other plate when the jaws are assembled. i

2. A wrench comprising a handle provided atone end with a jaw mountinghead, a pair of duplicate j aw plates having independ ent interlocking engagement with the opposite'fac-es' of the jaw head each provided with a jaw, said plates mounted on the outer faces of the jaw mounting head and independently movable transversely thereof, an adjusting screw carried by each aw plate and each havmg independent thre" dod engagement with the head whereby said jaws are capable of guidechannels, "opposite faces ofsaid head being each further provided with a threaded depression extending the full width of said .head and disposed parallel with said channels, a pail-of duplicate jaw plates each provided .on one face with parallel transverse flanges V for slidable interlocking vengagement with said end groove, and guidechannels v a pair of threaded ad usting. screwsv one pro ecting through the wall of eaclijaw plate and each engaging the threaded depression in its associated side wall or" sand head whereby said .jaws are capable of independent adjustment transversely to and from each other and stop means for precluding the relative outward movement of the aw plates on the head.

In testimony whereof lhave signed my name to this specification.

JOHN s'rnonnt. 

